Job Description
We're looking for driven innovators and optimizers who are excited about cutting-edge technology and making a measurable impact. If you're passionate, obsessed with performance, and excited to work where nanoseconds matter, read on.
What You'll Do

• Solve What Matters: Break down intricate challenges and deliver clear, elegant solutions that drive real world outcomes
• Build and Scale: Design, build and maintain high performance systems that are the backbone of our trading infrastructure
• Optimize Everything: Continuously push the limits of latency, reliability, and throughput in a distributed environment
• Partner and Deliver: Collaborate directly with traders, researchers, and fellow engineers to deliver ideas into production
• Own it in production: Take pride in running your code live - Monitoring, supporting and improving it every day

What we are looking for

• Deep experience in C++ with a passion for clean, performant code
• A strong grasp of multithreading, concurrency, and distributed systems
• Curiosity to explore how things work and a drive to improve them
• Clear, thoughtful communication and the ability to thrive in a high ownership environment
• Bachelor's (or higher) degree in a Computer Science, Engineering or related field
• Background in Trading or finance is a plus but not a requirement

Opportunities may be available from time to time in any location in which the business is based for suitable candidates. If you are interested in a career with Citadel Securities, please share your details and we will contact you if there is a vacancy available.
About Citadel Securities
Citadel Securities is a technology-driven, next-generation global market maker. We provide institutional and retail investors with world-class liquidity, competitive pricing and seamless front-to-back execution in a broad array of financial products. Our teams of engineers, traders and researchers harness leading-edge quantitative research and the accelerating power of compute, machine learning and AI to power our analytics and tackle the market's and our clients' most critical challenges. Together, we are forging the future of capital markets. For more information, visit citadelsecurities.com .